EP1693171B1 - Vorrichtung zur Perforation von Holzmasten - Google Patents

Vorrichtung zur Perforation von Holzmasten Download PDF

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Publication number
EP1693171B1
EP1693171B1 EP05027994A EP05027994A EP1693171B1 EP 1693171 B1 EP1693171 B1 EP 1693171B1 EP 05027994 A EP05027994 A EP 05027994A EP 05027994 A EP05027994 A EP 05027994A EP 1693171 B1 EP1693171 B1 EP 1693171B1
Authority
EP
European Patent Office
Prior art keywords
moisture
wooden
moisture measuring
wood
drill head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05027994A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1693171A1 (de
Inventor
Andreas Heidel
Dipl.-Ing. Hans-Norbert Marx
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Holzindustrie Fuerst Zu Fuerstenberg KG
Original Assignee
Holzindustrie Fuerst Zu Fuerstenberg KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Holzindustrie Fuerst Zu Fuerstenberg KG filed Critical Holzindustrie Fuerst Zu Fuerstenberg KG
Priority to SI200530337T priority Critical patent/SI1693171T1/sl
Priority to PL05027994T priority patent/PL1693171T3/pl
Publication of EP1693171A1 publication Critical patent/EP1693171A1/de
Application granted granted Critical
Publication of EP1693171B1 publication Critical patent/EP1693171B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C3/00—Drilling machines or drilling devices; Equipment therefor
    • B27C3/04—Stationary drilling machines with a plurality of working spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/0207—Pretreatment of wood before impregnation
    • B27K3/0221—Pore opening

Definitions

  • the present invention relates to a device for perforating wooden poles according to the preamble of claim 1.
  • wood poles according to the invention comprises all forms of wood components, in particular round logs.
  • Wood and wood components that are intended to be installed in the soil or water are subject to high infection pressure by wood-degrading organisms, which can considerably limit the service life of the components.
  • the wood-degrading organisms include in particular wood-destroying fungi from the group of Basidiomycetes (eg sponges, leaves) and / or ascomycetes from the group of fungi imperfecti (for example soft rot) and wood-destroying insects predominantly from the family Cerambycidae (longhorn beetles).
  • a preferred method for impregnating wooden poles is the so-called KVD impregnation, i. the boiler vacuum pressure impregnation, in which the impregnation solution is conveyed by means of pressure differences in the wood.
  • Perforation is a process for facilitating the impregnation of difficult-to-impregnate woods such as spruce, Picea abies.
  • the perforation is usually limited to the critical areas, in particular the earth / air zone.
  • Under ground / air zone is the transition area in the installed state (eg masts) understood, which extends from 10 to 30 cm above and 20 to 60 cm below the ground level and in the air and moisture access optimal existence conditions for wood-destroying organisms , so that in this area particularly high demands must be placed on a sufficient protection agent intake, depth and drug distribution.
  • the perforation of the critical zone e.g., the described earth / air area
  • Such devices generally have two spaced apart receiving devices for a wooden mast, a drilling carriage, which is arranged radially spaced from the recorded wooden mast, movable in the radial direction and equipped with a plurality of drills, as well as means for temporarily fixing the recorded wooden mast during the drilling process for perforation of the wooden mast.
  • the wooden mast is extended over its circumference and along an axial section which is at the boundary (earth / air zone) described above. corresponds, provided with a plurality of boreholes, whereby the penetration of the impregnating liquid is facilitated and improved.
  • the invention is therefore based on the object to offer a device by means of which it is possible to overcome the disadvantages of the prior art.
  • the invention is based on the idea of determining the moisture content of the wooden mast during the perforation, ie before impregnation.
  • the device for perforation of wooden poles is equipped with at least one moisture meter. By measuring the moisture during the perforation, it can be ensured that only those masts that are sufficiently dry are impregnated. Masts with too high residual moisture are detected and can be dried.
  • the moisture meter is advantageously arranged laterally next to the drilling carriage on the receiving devices.
  • An advantageous embodiment is to use two moisture meters immediately adjacent to the drilling carriage, wherein it is advantageous for reasons of space savings, when the moisture meters are arranged in receiving devices for the wooden poles on the side facing the drilling carriage.
  • the moisture meter has two measuring electrodes in the form of measuring tips, which can be pressed into the wooden mast. These measuring electrodes are preferably mounted on an electrode insert and interchangeable. As a result, measuring electrodes of different lengths can be used, if necessary, in order to be able to optimally check, for example, wooden masts with different diameters.
  • the measuring electrodes are connected via the electrode insert and a plunger with a compressed air cylinder, which is equipped with an adjustable stroke.
  • the air cylinder can be equipped with an adjustable hold-down for adjusting the radial distance to the recorded wooden mast.
  • the clock is preferably designed such that it allows up to 30 measurements per minute. Also, the clock may be adjustable so that it allows a measurement at the same time to the respective drilling operation or a time-shifted measurement to the respective drilling operation.
  • the moisture meter advantageously has a device for determining the moisture content as a function of the determined electrical resistance between the two measuring electrodes. Such a measurement is easy to accomplish and provides reliable results.
  • a further advantageous embodiment is that the moisture meter is coupled to a control device, which sorted out wooden poles for further drying when exceeding a specified limit for the moisture.
  • Advantageous means for perforation have a movable carriage, which preferably carries 5 to 50 drills, which are preferably 2-5 mm thick, including drive (motors and gearbox). After each drilling process, the roundwood is rotated by 10-30 ° about the longitudinal axis and the carriage is again driven to the wood and the perforation is continued.
  • the mechanics of the system now make it possible to carry out a moisture determination by means of a resistance measurement at the same time as every drilling or perforation process.
  • insulated electrodes are mounted on the described slide, which are pressed with each drilling process in the wood.
  • the drills themselves are formed directly as measuring electrodes and combined with the moisture meter.
  • the electrodes can also be pressed with their own pneumatic hydraulic or mechanical drive in the wood, drilling and measuring process must proceed carefully synchronized.
  • the measuring electrodes can also be provided with insulated shank in order to be able to determine the moisture of the wood at defined depths.
  • the electrodes are suitably connected to evaluation electronics, which on the one hand converts and registers the electrical resistances into values for the wood moisture and on the other hand triggers visual and / or acoustic alarms when set limit values are exceeded.
  • evaluation electronics which on the one hand converts and registers the electrical resistances into values for the wood moisture and on the other hand triggers visual and / or acoustic alarms when set limit values are exceeded.
  • the particular advantage of the system according to the invention is the fact that the moisture measurements without involvement of another process step automatically and over the entire circumference of round timbers is made possible and thus represents an effective method for ensuring the required impregnation.
  • the evaluation electronics allow the exclusion of non-drenched woods and make a significant contribution to ensuring high-quality impregnation combined with a long service life and high road safety of the protected timber.
  • the device 1 for perforating wooden poles has two spaced-apart receiving devices 10, 20 for a wooden pole 100, a drilling carriage 30, which is arranged radially spaced from the recorded wood pole 100, movable in the radial direction and equipped with a plurality of drills 60, and facilities for temporarily fixing the recorded wooden mast 100 during the drilling process for perforating the wooden mast 100, wherein immediately adjacent to the drilling carriage 30 at least one moisture device 40 is arranged.
  • the receiving device 10 and 20 consist of two receiving walls 11, 12 and 21, 22. These receiving walls 11, 12, 21 and 22 act as side parts of the receiving units 10 and 20 and are arranged side by side in parallel.
  • the receiving devices 10 and 20 with the receiving walls 11, 12 and 21, 22 have on the wooden pole 100 side facing a trough-shaped recess for receiving the wooden mast 100.
  • the receiving devices 10 and 20 each have two fixing rollers 13, 14 and 23, 24, which are arranged between the receiving walls 11, 12 and 21, 22 and held by these, wherein the receiving walls 11, 12 and 21, 22 act as a support for the fixing rollers 12, 13 and 23, 24 (the roller 24 is not shown in the figures).
  • the fixing rollers 13, 14 and 23, 24 are arranged between the receiving walls 11, 12 and 21, 22, that they with their radius on the boundary of the receiving walls 11, 12 and 21, 22 out in the area of the trough-shaped bulges of the receiving devices 10 and 20 protrude to fix there the recorded wooden pole 100 during the drilling operation between the fixing rollers 13, 14 and 23, 24.
  • the trough-shaped bulge of the receiving device 10 and 20 has two different legs.
  • the receiving devices 10 and 20 designed in this way are spaced apart so far in the device 1 for perforation that a secure support of the wooden mast 100 is ensured and a sufficiently large area for the perforation is available.
  • a drilling carriage 30 is arranged between the receiving devices 10 and 20 on the side facing away from the feeding wooden poles, radially spaced from the recorded wooden pole 100, movable in the radial direction.
  • the drilling carriage 30 is equipped with a plurality of drills 60, which may be arranged in one or more rows axially to the wood pole 100.
  • the drilling carriage has on the side facing the wooden pole 100 at least one distance sensor 31, by means of which the penetration depth of the drill 60 can be controlled during the drilling process.
  • the drilling carriage 30 is arranged to be movable radially in the direction of the wooden mast 100.
  • a downwardly fold-away pressing device 50 is arranged, consisting of two legs 51, 52, in which two pressure rollers 53, 54 are stored.
  • the legs 51, 52 are in its upper region, in which the pressure rollers 54, 53 are embedded, angled in the direction of the fixing rollers 13, 14 and 23, 24, so that during the drilling operation by means of the pressing device 50 and the fixing rollers 13, 14 and 23, 24 a fixation of the wooden mast 100 is possible.
  • the pressure rollers 53, 54 in the pressing device 50 are arranged so that they protrude in the direction of the wood pole 100 to be fixed from the pressing device 50, so that the log can be 100 fixed between the rollers 54, 53.
  • the pressing device 50 is designed so that it can be folded down when feeding the log 100 away from the drilling carriage and thus clears the way for the supply of the wooden mast 100.
  • the moisture meter 40 consists of a compressed air cylinder 41 on the plunger 44, an electrode insert 42 is arranged for measuring electrodes 43.
  • the moisture meter 40 is arranged laterally next to the drilling carriage 30 on one of the receiving devices 10, 20 either on the side facing the drilling carriage or - as shown here - on the opposite side.
  • the measuring principle of the moisture meter 40 is based on the measurement of the electrical resistance between the two measuring electrodes 43, which are designed as measuring tips and are pressed into the wood pole 100 for measuring the moisture. These measuring electrodes 43 are connected via an electrode insert 42 and a plunger 44 with a compressed air cylinder 41.
  • the electrode insert 42 is designed so that the measuring electrodes 43 can be exchanged. In this way it is possible to use measuring electrodes 43 in different lengths.
  • the compressed air cylinder 41 has the function of pressing the measuring tips 43 for measurement in the wooden mast 100, for which purpose it is equipped with a predeterminable stroke and an adjustable hold-down for adjusting the radial distance to the picked-up wooden mast 100.
  • the air cylinder is equipped with a timer for triggering the measuring process, with a cycle time of up to 30 measurements per minute.
  • the clock can be set so that a measurement is carried out simultaneously with the respective drilling operation or with a time delay.
  • the moisture meter 40 is additionally coupled to a control device, not shown, which emits a signal when a predetermined limit value for the moisture is exceeded and, depending on the system configuration, the corresponding one Extract the wooden pole from the device for further drying.
  • the pressing device 50 For receiving the wooden mast 100, first the pressing device 50 is folded away downwards. Subsequently, the wooden mast 100 can be inserted into the trough-shaped bulge of the receiving devices 10 and 20 and fixed there by means of the fixing rollers 13, 14 and 23, 24 and the pressure rollers 54, 53. After fixation, the drilling operation can be started by the drilling carriage 30 is moved radially in the direction of the wood pole 100. The penetration depth of the drill 60 is controlled by the distance sensors 31.
  • the moisture of the wooden mast 100 can now be determined via the moisture meter 40 by pressing the measuring electrodes 43 as measuring tips 43 into the wood by means of an air cylinder 41. After the measurement, these measuring tips 43 are moved back again.
  • the moisture measurement can be performed in time simultaneously but also with a time delay with the drilling process. This drilling and measuring process is repeated until the wooden mast is completely perforated and measured over the circumference. It has been found that about 10-15 moisture measurements over the circumference of the log 100 sufficient to reliably detect the moisture of the wood.
  • the wood pole 100 is either further processed from the device 1 for perforating and impregnated or at Exceeding the moisture content sorted out for additional drying.
  • a moisture meter Gann Mess- und Regeltechnik GmbH, Stuttgart, Gann Hydromat DMT-8 is used, which covers a range between 10 and 50% wood moisture.
  • the measurement time is at least 1.0 seconds and the clock rate a maximum of 30 measurements per minute.
  • the device is equipped with a compressed air connection of 3 to 6 bar.
  • the adjustment height of the hold-down for adjusting the radial distance to the recorded wood pole 100 is 12 mm.
  • the electrodes are interchangeable and have a length of 40 or 60 mm.
  • the described system for ensuring the impregnation maturity is suitable for all types of protective agents, such as e.g. chromium-containing and chromium-free wood preservatives, for coal tar oil and its solvent-based and water-dilutable modifiers and for aqueous and solvent-based hydrophobing, without this being a limitation to the above-mentioned methods.
  • protective agents such as e.g. chromium-containing and chromium-free wood preservatives, for coal tar oil and its solvent-based and water-dilutable modifiers and for aqueous and solvent-based hydrophobing, without this being a limitation to the above-mentioned methods.
  • the method described for the continuous determination of the moisture content and impregnation maturity is suitable for all types of wood and all forms.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Electromechanical Clocks (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
EP05027994A 2005-02-18 2005-12-21 Vorrichtung zur Perforation von Holzmasten Not-in-force EP1693171B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200530337T SI1693171T1 (sl) 2005-02-18 2005-12-21 Naprava za perforiranje lesenih kolov
PL05027994T PL1693171T3 (pl) 2005-02-18 2005-12-21 Urządzenie do perforowania drewnianych słupów

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200520002735 DE202005002735U1 (de) 2005-02-18 2005-02-18 Vorrichtung zur Perforation von Holzmasten

Publications (2)

Publication Number Publication Date
EP1693171A1 EP1693171A1 (de) 2006-08-23
EP1693171B1 true EP1693171B1 (de) 2008-05-07

Family

ID=34745609

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05027994A Not-in-force EP1693171B1 (de) 2005-02-18 2005-12-21 Vorrichtung zur Perforation von Holzmasten

Country Status (5)

Country Link
EP (1) EP1693171B1 (pl)
AT (1) ATE394208T1 (pl)
DE (2) DE202005002735U1 (pl)
PL (1) PL1693171T3 (pl)
SI (1) SI1693171T1 (pl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113276223A (zh) * 2021-05-06 2021-08-20 常山县鑫晖清洁用品有限公司 一种毛掸杆加工用的钻孔设备
CN114454264B (zh) * 2022-01-20 2022-11-29 南京林业大学 一种竹木条的钻孔加工装置及其方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071637A (en) * 1976-03-15 1978-01-31 Eisenwerk Weserhutte Ag Process for punching holes and slots in structural timber
SE9501840L (sv) * 1995-05-17 1996-09-16 Vattenfall Ab Förfarande och maskin för håltagning i en trästock eller dylikt
CA2273541A1 (en) * 1999-06-03 2000-12-03 Canadian Forest Products Ltd. A method of lumber preparation to improve drying and treatment and development of a new engineered wood composite
JP2001311729A (ja) * 2000-04-28 2001-11-09 Ono Sokki Co Ltd 木材含水判定装置及び木材含水判定方法
FR2851658B1 (fr) * 2003-02-24 2005-05-27 Michel Couvreur Procede de mesure de l'humidite du bois et dispositif de mise en oeuvre du procede

Also Published As

Publication number Publication date
DE502005003971D1 (de) 2008-06-19
ATE394208T1 (de) 2008-05-15
DE202005002735U1 (de) 2005-07-07
SI1693171T1 (sl) 2008-10-31
PL1693171T3 (pl) 2008-11-28
EP1693171A1 (de) 2006-08-23

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